Using the utility function gets a better name.
For example:
$ python
>>> from oslo_utils import reflection
>>> class A(object):
... def m(self):
... pass
...
>>> z = A()
>>> reflection.get_callable_name(z.m)
'__main__.A.m'
Versus:
>>> z.m.__name__
'm'
Change-Id: I2eb9f49f6d7578d5d4e3a40cbd695e6622f3f850
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